VII. Solve the word problem. 1. Mr. Dave is carrying 2 bags. One weighs 5 kg 290 g and other weighs 12 kg 58 g. What is the total weight he is carrying? Statement Working 2. Maduvod 450 50 x
Answers
Step-by-step explanation:


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Class 11
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>>Units and Measurement
>>Rounding of Digits
>>The total mass of a box measured by groc
Question

The total mass of a box measured by grocer's balance is 2.300 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is:(a) the total mass of the box?(b) the difference in the masses of the pieces to correct significant figures?
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Solution

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mi=2.300kg ( 2 significant digits)
m1=20.15g=0.02015kg ( 4 significant digits)
m2=20.175g=0.02017kg ( 4 significant digits)
(a)
Adding
M=Σm=2.3+0.02015+0.02017kg=2.34032kg
But since the initial mass has least 2 signifincant digits, the final mass should not have more than 2 significant digits
Hence,
M=2.3Kg
(b)
Subtracting
m2−m1=0.02g
Since the initial mass has 4 significant digits, the result can have 4 or less significant digits
Hence here the no. of significant digit =2
Answer:
17 kg 87 g
Step-by-step explanation:
Weight of bag I = 5 kg 290 g = 5.290 kg
Weight of bag II = 12 kg 58 g = 12.58 kg
Total weight = Weight of bag I + Weight of bag II
= 5.29 + 12.58
= 17.87 kg = 17 kg 87 g
Thus, Mr. Dave is carrying the total weight of 17 kg 87 g.
Hope it helps..!